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The world's best gem articles, published weekly.


Most Recent Articles

Combining Stones in Jewelry

Combining stones can be more than adding diamond accents to colored gemstone jewelry. Explore colored stone combos and learn how to set gems within…

Identifying Synthetic Diamonds

Although most manufacturers disclose their synthetic diamonds, some resellers don’t. Learn how to identify these lab-created diamonds.…

What is a Crystal?

Learn the scientific definition of crystal used by gemologists and answer some basic questions about what is and is not a crystal.

Watermelon Tourmaline Buying Guide

Looking for a fun summertime gem? Watermelon tourmaline adds a pop of color that’s perfect for a playful summer look. Learn about the quality factors…

What is a Gem Reflectometer?

What’s the difference between a reflectometer and a refractometer? If you’re interested in studying or buying gems, learn the facts here.…

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